/Engine/Plugins/Experimental/LocalizableMessage/Source/LocalizableMessageBlueprint/Public/LocalizableMessageLibrary.h
Returns true if the message is empty
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintPure, Category="Localizable Message") static bool IsEmpty_LocalizableMessage ( const [FLocalizableMessage](API\Plugins\LocalizableMessage\FLocalizableMessage) & Message )